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Finding the Fourth Proportional to 880.01, 1,214.31 and 714.62

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Solution

The fourth proportional to 880.01, 1,214.31 and 714.62 is: 986.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.01 : 1,214.31 = 714.62 : x
  2. Step 2: Convert to fraction form
    880.01/1,214.31 = 714.62/x
  3. Step 3: Cross multiply
    880.01x = 1,214.31 × 714.62
  4. Step 4: Simplify right side
    880.01x = 867,764.14
  5. Step 5: Solve for x
    x = 867,764.14/880.01
  6. Step 6: Final answer
    x = 986.09

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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.