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Finding the Fourth Proportional to 647.56, 970.38 and 532.82

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Solution

The fourth proportional to 647.56, 970.38 and 532.82 is: 798.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.56 : 970.38 = 532.82 : x
  2. Step 2: Convert to fraction form
    647.56/970.38 = 532.82/x
  3. Step 3: Cross multiply
    647.56x = 970.38 × 532.82
  4. Step 4: Simplify right side
    647.56x = 517,037.87
  5. Step 5: Solve for x
    x = 517,037.87/647.56
  6. Step 6: Final answer
    x = 798.44

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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.