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Finding the Fourth Proportional to 866.69, 1,300.12 and 373.26

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Solution

The fourth proportional to 866.69, 1,300.12 and 373.26 is: 559.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.69 : 1,300.12 = 373.26 : x
  2. Step 2: Convert to fraction form
    866.69/1,300.12 = 373.26/x
  3. Step 3: Cross multiply
    866.69x = 1,300.12 × 373.26
  4. Step 4: Simplify right side
    866.69x = 485,282.79
  5. Step 5: Solve for x
    x = 485,282.79/866.69
  6. Step 6: Final answer
    x = 559.93

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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.