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Finding the Fourth Proportional to 638.01, 875.68 and 566.46

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Solution

The fourth proportional to 638.01, 875.68 and 566.46 is: 777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.01 : 875.68 = 566.46 : x
  2. Step 2: Convert to fraction form
    638.01/875.68 = 566.46/x
  3. Step 3: Cross multiply
    638.01x = 875.68 × 566.46
  4. Step 4: Simplify right side
    638.01x = 496,036.28
  5. Step 5: Solve for x
    x = 496,036.28/638.01
  6. Step 6: Final answer
    x = 777.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.