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Finding the Fourth Proportional to 851.04, 1,272.12 and 740.52

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Solution

The fourth proportional to 851.04, 1,272.12 and 740.52 is: 1,106.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    851.04 : 1,272.12 = 740.52 : x
  2. Step 2: Convert to fraction form
    851.04/1,272.12 = 740.52/x
  3. Step 3: Cross multiply
    851.04x = 1,272.12 × 740.52
  4. Step 4: Simplify right side
    851.04x = 942,030.30
  5. Step 5: Solve for x
    x = 942,030.30/851.04
  6. Step 6: Final answer
    x = 1,106.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.