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Finding the Fourth Proportional to 714.03, 1,070.78 and 324.02

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Solution

The fourth proportional to 714.03, 1,070.78 and 324.02 is: 485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.03 : 1,070.78 = 324.02 : x
  2. Step 2: Convert to fraction form
    714.03/1,070.78 = 324.02/x
  3. Step 3: Cross multiply
    714.03x = 1,070.78 × 324.02
  4. Step 4: Simplify right side
    714.03x = 346,947.16
  5. Step 5: Solve for x
    x = 346,947.16/714.03
  6. Step 6: Final answer
    x = 485.90

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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.