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Finding the Fourth Proportional to 663.50, 916.16 and 533.10

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Solution

The fourth proportional to 663.50, 916.16 and 533.10 is: 736.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.50 : 916.16 = 533.10 : x
  2. Step 2: Convert to fraction form
    663.50/916.16 = 533.10/x
  3. Step 3: Cross multiply
    663.50x = 916.16 × 533.10
  4. Step 4: Simplify right side
    663.50x = 488,404.90
  5. Step 5: Solve for x
    x = 488,404.90/663.50
  6. Step 6: Final answer
    x = 736.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.