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Finding the Fourth Proportional to 1,073.65, 1,607.75 and 899.86

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Solution

The fourth proportional to 1,073.65, 1,607.75 and 899.86 is: 1,347.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.65 : 1,607.75 = 899.86 : x
  2. Step 2: Convert to fraction form
    1,073.65/1,607.75 = 899.86/x
  3. Step 3: Cross multiply
    1,073.65x = 1,607.75 × 899.86
  4. Step 4: Simplify right side
    1,073.65x = 1,446,737.38
  5. Step 5: Solve for x
    x = 1,446,737.38/1,073.65
  6. Step 6: Final answer
    x = 1,347.50

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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.