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Finding the Fourth Proportional to 802.15, 1,204.02 and 621.52

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Solution

The fourth proportional to 802.15, 1,204.02 and 621.52 is: 932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.15 : 1,204.02 = 621.52 : x
  2. Step 2: Convert to fraction form
    802.15/1,204.02 = 621.52/x
  3. Step 3: Cross multiply
    802.15x = 1,204.02 × 621.52
  4. Step 4: Simplify right side
    802.15x = 748,322.51
  5. Step 5: Solve for x
    x = 748,322.51/802.15
  6. Step 6: Final answer
    x = 932.90

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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.