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Finding the Fourth Proportional to 740.02, 1,108.95 and 659.02

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Solution

The fourth proportional to 740.02, 1,108.95 and 659.02 is: 987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.02 : 1,108.95 = 659.02 : x
  2. Step 2: Convert to fraction form
    740.02/1,108.95 = 659.02/x
  3. Step 3: Cross multiply
    740.02x = 1,108.95 × 659.02
  4. Step 4: Simplify right side
    740.02x = 730,820.23
  5. Step 5: Solve for x
    x = 730,820.23/740.02
  6. Step 6: Final answer
    x = 987.57

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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.