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Finding the Fourth Proportional to 908.53, 1,254.14 and 554.35

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Solution

The fourth proportional to 908.53, 1,254.14 and 554.35 is: 765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.53 : 1,254.14 = 554.35 : x
  2. Step 2: Convert to fraction form
    908.53/1,254.14 = 554.35/x
  3. Step 3: Cross multiply
    908.53x = 1,254.14 × 554.35
  4. Step 4: Simplify right side
    908.53x = 695,232.51
  5. Step 5: Solve for x
    x = 695,232.51/908.53
  6. Step 6: Final answer
    x = 765.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.