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Finding the Fourth Proportional to 623.38, 860.57 and 483.18

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Solution

The fourth proportional to 623.38, 860.57 and 483.18 is: 667.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.38 : 860.57 = 483.18 : x
  2. Step 2: Convert to fraction form
    623.38/860.57 = 483.18/x
  3. Step 3: Cross multiply
    623.38x = 860.57 × 483.18
  4. Step 4: Simplify right side
    623.38x = 415,810.21
  5. Step 5: Solve for x
    x = 415,810.21/623.38
  6. Step 6: Final answer
    x = 667.03

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Half scale
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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.