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Finding the Fourth Proportional to 602.38, 830.37 and 471.16

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Solution

The fourth proportional to 602.38, 830.37 and 471.16 is: 649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.38 : 830.37 = 471.16 : x
  2. Step 2: Convert to fraction form
    602.38/830.37 = 471.16/x
  3. Step 3: Cross multiply
    602.38x = 830.37 × 471.16
  4. Step 4: Simplify right side
    602.38x = 391,237.13
  5. Step 5: Solve for x
    x = 391,237.13/602.38
  6. Step 6: Final answer
    x = 649.49

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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.