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Finding the Fourth Proportional to 1,036.39, 1,554.89 and 378.25

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Solution

The fourth proportional to 1,036.39, 1,554.89 and 378.25 is: 567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.39 : 1,554.89 = 378.25 : x
  2. Step 2: Convert to fraction form
    1,036.39/1,554.89 = 378.25/x
  3. Step 3: Cross multiply
    1,036.39x = 1,554.89 × 378.25
  4. Step 4: Simplify right side
    1,036.39x = 588,137.14
  5. Step 5: Solve for x
    x = 588,137.14/1,036.39
  6. Step 6: Final answer
    x = 567.49

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.