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Finding the Fourth Proportional to 616.48, 923.86 and 307.65

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Solution

The fourth proportional to 616.48, 923.86 and 307.65 is: 461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.48 : 923.86 = 307.65 : x
  2. Step 2: Convert to fraction form
    616.48/923.86 = 307.65/x
  3. Step 3: Cross multiply
    616.48x = 923.86 × 307.65
  4. Step 4: Simplify right side
    616.48x = 284,225.53
  5. Step 5: Solve for x
    x = 284,225.53/616.48
  6. Step 6: Final answer
    x = 461.05

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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.