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Finding the Fourth Proportional to 1,148.68, 1,583.06 and 962.20

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Solution

The fourth proportional to 1,148.68, 1,583.06 and 962.20 is: 1,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.68 : 1,583.06 = 962.20 : x
  2. Step 2: Convert to fraction form
    1,148.68/1,583.06 = 962.20/x
  3. Step 3: Cross multiply
    1,148.68x = 1,583.06 × 962.20
  4. Step 4: Simplify right side
    1,148.68x = 1,523,220.33
  5. Step 5: Solve for x
    x = 1,523,220.33/1,148.68
  6. Step 6: Final answer
    x = 1,326.06

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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.