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Finding the Fourth Proportional to 610.79, 916.32 and 336.74

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Solution

The fourth proportional to 610.79, 916.32 and 336.74 is: 505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.79 : 916.32 = 336.74 : x
  2. Step 2: Convert to fraction form
    610.79/916.32 = 336.74/x
  3. Step 3: Cross multiply
    610.79x = 916.32 × 336.74
  4. Step 4: Simplify right side
    610.79x = 308,557.02
  5. Step 5: Solve for x
    x = 308,557.02/610.79
  6. Step 6: Final answer
    x = 505.18

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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.