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Finding the Fourth Proportional to 616.98, 924.51 and 388.50

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Solution

The fourth proportional to 616.98, 924.51 and 388.50 is: 582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.98 : 924.51 = 388.50 : x
  2. Step 2: Convert to fraction form
    616.98/924.51 = 388.50/x
  3. Step 3: Cross multiply
    616.98x = 924.51 × 388.50
  4. Step 4: Simplify right side
    616.98x = 359,172.14
  5. Step 5: Solve for x
    x = 359,172.14/616.98
  6. Step 6: Final answer
    x = 582.15

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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.