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Finding the Fourth Proportional to 653.29, 900.47 and 476.30

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Solution

The fourth proportional to 653.29, 900.47 and 476.30 is: 656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.29 : 900.47 = 476.30 : x
  2. Step 2: Convert to fraction form
    653.29/900.47 = 476.30/x
  3. Step 3: Cross multiply
    653.29x = 900.47 × 476.30
  4. Step 4: Simplify right side
    653.29x = 428,897.30
  5. Step 5: Solve for x
    x = 428,897.30/653.29
  6. Step 6: Final answer
    x = 656.52

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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.