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Finding the Fourth Proportional to 903.48, 1,354.32 and 538.44

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Solution

The fourth proportional to 903.48, 1,354.32 and 538.44 is: 807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.48 : 1,354.32 = 538.44 : x
  2. Step 2: Convert to fraction form
    903.48/1,354.32 = 538.44/x
  3. Step 3: Cross multiply
    903.48x = 1,354.32 × 538.44
  4. Step 4: Simplify right side
    903.48x = 729,220.06
  5. Step 5: Solve for x
    x = 729,220.06/903.48
  6. Step 6: Final answer
    x = 807.12

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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.