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Finding the Fourth Proportional to 714.08, 985.52 and 434.36

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Solution

The fourth proportional to 714.08, 985.52 and 434.36 is: 599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.08 : 985.52 = 434.36 : x
  2. Step 2: Convert to fraction form
    714.08/985.52 = 434.36/x
  3. Step 3: Cross multiply
    714.08x = 985.52 × 434.36
  4. Step 4: Simplify right side
    714.08x = 428,070.47
  5. Step 5: Solve for x
    x = 428,070.47/714.08
  6. Step 6: Final answer
    x = 599.47

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1.5x scale

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.