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Finding the Fourth Proportional to 900.11, 1,349.35 and 322.85

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Solution

The fourth proportional to 900.11, 1,349.35 and 322.85 is: 483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.11 : 1,349.35 = 322.85 : x
  2. Step 2: Convert to fraction form
    900.11/1,349.35 = 322.85/x
  3. Step 3: Cross multiply
    900.11x = 1,349.35 × 322.85
  4. Step 4: Simplify right side
    900.11x = 435,637.65
  5. Step 5: Solve for x
    x = 435,637.65/900.11
  6. Step 6: Final answer
    x = 483.98

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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.