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Finding the Fourth Proportional to 888.18, 1,225.76 and 495.28

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Solution

The fourth proportional to 888.18, 1,225.76 and 495.28 is: 683.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.18 : 1,225.76 = 495.28 : x
  2. Step 2: Convert to fraction form
    888.18/1,225.76 = 495.28/x
  3. Step 3: Cross multiply
    888.18x = 1,225.76 × 495.28
  4. Step 4: Simplify right side
    888.18x = 607,094.41
  5. Step 5: Solve for x
    x = 607,094.41/888.18
  6. Step 6: Final answer
    x = 683.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.