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Finding the Fourth Proportional to 897.14, 1,346.43 and 637.40

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Solution

The fourth proportional to 897.14, 1,346.43 and 637.40 is: 956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.14 : 1,346.43 = 637.40 : x
  2. Step 2: Convert to fraction form
    897.14/1,346.43 = 637.40/x
  3. Step 3: Cross multiply
    897.14x = 1,346.43 × 637.40
  4. Step 4: Simplify right side
    897.14x = 858,214.48
  5. Step 5: Solve for x
    x = 858,214.48/897.14
  6. Step 6: Final answer
    x = 956.61

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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.