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Finding the Fourth Proportional to 887.23, 1,330.85 and 862.93

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Solution

The fourth proportional to 887.23, 1,330.85 and 862.93 is: 1,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.23 : 1,330.85 = 862.93 : x
  2. Step 2: Convert to fraction form
    887.23/1,330.85 = 862.93/x
  3. Step 3: Cross multiply
    887.23x = 1,330.85 × 862.93
  4. Step 4: Simplify right side
    887.23x = 1,148,430.39
  5. Step 5: Solve for x
    x = 1,148,430.39/887.23
  6. Step 6: Final answer
    x = 1,294.40

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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.