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Finding the Fourth Proportional to 888.07, 1,225.40 and 533.91

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Solution

The fourth proportional to 888.07, 1,225.40 and 533.91 is: 736.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.07 : 1,225.40 = 533.91 : x
  2. Step 2: Convert to fraction form
    888.07/1,225.40 = 533.91/x
  3. Step 3: Cross multiply
    888.07x = 1,225.40 × 533.91
  4. Step 4: Simplify right side
    888.07x = 654,250.64
  5. Step 5: Solve for x
    x = 654,250.64/888.07
  6. Step 6: Final answer
    x = 736.71

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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.