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Finding the Fourth Proportional to 603.60, 832.20 and 471.12

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Solution

The fourth proportional to 603.60, 832.20 and 471.12 is: 649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.60 : 832.20 = 471.12 : x
  2. Step 2: Convert to fraction form
    603.60/832.20 = 471.12/x
  3. Step 3: Cross multiply
    603.60x = 832.20 × 471.12
  4. Step 4: Simplify right side
    603.60x = 392,066.06
  5. Step 5: Solve for x
    x = 392,066.06/603.60
  6. Step 6: Final answer
    x = 649.55

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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.