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Finding the Fourth Proportional to 510.91, 766.36 and 126.16

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Solution

The fourth proportional to 510.91, 766.36 and 126.16 is: 189.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.91 : 766.36 = 126.16 : x
  2. Step 2: Convert to fraction form
    510.91/766.36 = 126.16/x
  3. Step 3: Cross multiply
    510.91x = 766.36 × 126.16
  4. Step 4: Simplify right side
    510.91x = 96,679.52
  5. Step 5: Solve for x
    x = 96,679.52/510.91
  6. Step 6: Final answer
    x = 189.23

Related Problems

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Half scale
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Double scale
Find fourth proportional to 511.91, 767.85 and 127.16
Similar ratio
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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.