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Finding the Fourth Proportional to 987.02, 1,362.02 and 544.92

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Solution

The fourth proportional to 987.02, 1,362.02 and 544.92 is: 751.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.02 : 1,362.02 = 544.92 : x
  2. Step 2: Convert to fraction form
    987.02/1,362.02 = 544.92/x
  3. Step 3: Cross multiply
    987.02x = 1,362.02 × 544.92
  4. Step 4: Simplify right side
    987.02x = 742,189.21
  5. Step 5: Solve for x
    x = 742,189.21/987.02
  6. Step 6: Final answer
    x = 751.95

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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.