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Finding the Fourth Proportional to 510.56, 766.19 and 328.09

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Solution

The fourth proportional to 510.56, 766.19 and 328.09 is: 492.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.56 : 766.19 = 328.09 : x
  2. Step 2: Convert to fraction form
    510.56/766.19 = 328.09/x
  3. Step 3: Cross multiply
    510.56x = 766.19 × 328.09
  4. Step 4: Simplify right side
    510.56x = 251,377.77
  5. Step 5: Solve for x
    x = 251,377.77/510.56
  6. Step 6: Final answer
    x = 492.35

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Double scale
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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.