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Finding the Fourth Proportional to 714.16, 1,066.12 and 682.64

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Solution

The fourth proportional to 714.16, 1,066.12 and 682.64 is: 1,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.16 : 1,066.12 = 682.64 : x
  2. Step 2: Convert to fraction form
    714.16/1,066.12 = 682.64/x
  3. Step 3: Cross multiply
    714.16x = 1,066.12 × 682.64
  4. Step 4: Simplify right side
    714.16x = 727,776.16
  5. Step 5: Solve for x
    x = 727,776.16/714.16
  6. Step 6: Final answer
    x = 1,019.07

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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.