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Finding the Fourth Proportional to 1,014.06, 1,521.12 and 648

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Solution

The fourth proportional to 1,014.06, 1,521.12 and 648 is: 972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.06 : 1,521.12 = 648 : x
  2. Step 2: Convert to fraction form
    1,014.06/1,521.12 = 648/x
  3. Step 3: Cross multiply
    1,014.06x = 1,521.12 × 648
  4. Step 4: Simplify right side
    1,014.06x = 985,685.76
  5. Step 5: Solve for x
    x = 985,685.76/1,014.06
  6. Step 6: Final answer
    x = 972.02

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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.