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Finding the Fourth Proportional to 571.20, 787.08 and 473.28

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Solution

The fourth proportional to 571.20, 787.08 and 473.28 is: 652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.20 : 787.08 = 473.28 : x
  2. Step 2: Convert to fraction form
    571.20/787.08 = 473.28/x
  3. Step 3: Cross multiply
    571.20x = 787.08 × 473.28
  4. Step 4: Simplify right side
    571.20x = 372,509.22
  5. Step 5: Solve for x
    x = 372,509.22/571.20
  6. Step 6: Final answer
    x = 652.15

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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.