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Finding the Fourth Proportional to 510.08, 765.12 and 423.68

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Solution

The fourth proportional to 510.08, 765.12 and 423.68 is: 635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.08 : 765.12 = 423.68 : x
  2. Step 2: Convert to fraction form
    510.08/765.12 = 423.68/x
  3. Step 3: Cross multiply
    510.08x = 765.12 × 423.68
  4. Step 4: Simplify right side
    510.08x = 324,166.04
  5. Step 5: Solve for x
    x = 324,166.04/510.08
  6. Step 6: Final answer
    x = 635.52

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Double scale
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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.