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Finding the Fourth Proportional to 460.65, 688.95 and 357.78

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Solution

The fourth proportional to 460.65, 688.95 and 357.78 is: 535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.65 : 688.95 = 357.78 : x
  2. Step 2: Convert to fraction form
    460.65/688.95 = 357.78/x
  3. Step 3: Cross multiply
    460.65x = 688.95 × 357.78
  4. Step 4: Simplify right side
    460.65x = 246,492.53
  5. Step 5: Solve for x
    x = 246,492.53/460.65
  6. Step 6: Final answer
    x = 535.10

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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.