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Finding the Fourth Proportional to 616.68, 924.72 and 385.22

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Solution

The fourth proportional to 616.68, 924.72 and 385.22 is: 577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.68 : 924.72 = 385.22 : x
  2. Step 2: Convert to fraction form
    616.68/924.72 = 385.22/x
  3. Step 3: Cross multiply
    616.68x = 924.72 × 385.22
  4. Step 4: Simplify right side
    616.68x = 356,216.01
  5. Step 5: Solve for x
    x = 356,216.01/616.68
  6. Step 6: Final answer
    x = 577.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.