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Finding the Fourth Proportional to 610.65, 916.26 and 437.79

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Solution

The fourth proportional to 610.65, 916.26 and 437.79 is: 656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.65 : 916.26 = 437.79 : x
  2. Step 2: Convert to fraction form
    610.65/916.26 = 437.79/x
  3. Step 3: Cross multiply
    610.65x = 916.26 × 437.79
  4. Step 4: Simplify right side
    610.65x = 401,129.47
  5. Step 5: Solve for x
    x = 401,129.47/610.65
  6. Step 6: Final answer
    x = 656.89

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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.