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Finding the Fourth Proportional to 666.94, 999.55 and 461.18

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Solution

The fourth proportional to 666.94, 999.55 and 461.18 is: 691.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.94 : 999.55 = 461.18 : x
  2. Step 2: Convert to fraction form
    666.94/999.55 = 461.18/x
  3. Step 3: Cross multiply
    666.94x = 999.55 × 461.18
  4. Step 4: Simplify right side
    666.94x = 460,972.47
  5. Step 5: Solve for x
    x = 460,972.47/666.94
  6. Step 6: Final answer
    x = 691.18

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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.