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Finding the Fourth Proportional to 645.51, 972.66 and 532.47

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Solution

The fourth proportional to 645.51, 972.66 and 532.47 is: 802.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.51 : 972.66 = 532.47 : x
  2. Step 2: Convert to fraction form
    645.51/972.66 = 532.47/x
  3. Step 3: Cross multiply
    645.51x = 972.66 × 532.47
  4. Step 4: Simplify right side
    645.51x = 517,912.27
  5. Step 5: Solve for x
    x = 517,912.27/645.51
  6. Step 6: Final answer
    x = 802.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.