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Finding the Fourth Proportional to 610.92, 916.51 and 286.11

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Solution

The fourth proportional to 610.92, 916.51 and 286.11 is: 429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.92 : 916.51 = 286.11 : x
  2. Step 2: Convert to fraction form
    610.92/916.51 = 286.11/x
  3. Step 3: Cross multiply
    610.92x = 916.51 × 286.11
  4. Step 4: Simplify right side
    610.92x = 262,222.68
  5. Step 5: Solve for x
    x = 262,222.68/610.92
  6. Step 6: Final answer
    x = 429.23

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1.5x scale

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.