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Finding the Fourth Proportional to 888.12, 1,225.53 and 551.93

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Solution

The fourth proportional to 888.12, 1,225.53 and 551.93 is: 761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.12 : 1,225.53 = 551.93 : x
  2. Step 2: Convert to fraction form
    888.12/1,225.53 = 551.93/x
  3. Step 3: Cross multiply
    888.12x = 1,225.53 × 551.93
  4. Step 4: Simplify right side
    888.12x = 676,400.65
  5. Step 5: Solve for x
    x = 676,400.65/888.12
  6. Step 6: Final answer
    x = 761.61

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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.