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Finding the Fourth Proportional to 900.36, 1,352.70 and 576.36

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Solution

The fourth proportional to 900.36, 1,352.70 and 576.36 is: 865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.36 : 1,352.70 = 576.36 : x
  2. Step 2: Convert to fraction form
    900.36/1,352.70 = 576.36/x
  3. Step 3: Cross multiply
    900.36x = 1,352.70 × 576.36
  4. Step 4: Simplify right side
    900.36x = 779,642.17
  5. Step 5: Solve for x
    x = 779,642.17/900.36
  6. Step 6: Final answer
    x = 865.92

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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.