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Finding the Fourth Proportional to 510.34, 764.04 and 389.08

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Solution

The fourth proportional to 510.34, 764.04 and 389.08 is: 582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.34 : 764.04 = 389.08 : x
  2. Step 2: Convert to fraction form
    510.34/764.04 = 389.08/x
  3. Step 3: Cross multiply
    510.34x = 764.04 × 389.08
  4. Step 4: Simplify right side
    510.34x = 297,272.68
  5. Step 5: Solve for x
    x = 297,272.68/510.34
  6. Step 6: Final answer
    x = 582.50

Related Problems

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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.