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Finding the Fourth Proportional to 807.88, 1,210.12 and 588.36

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Solution

The fourth proportional to 807.88, 1,210.12 and 588.36 is: 881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.88 : 1,210.12 = 588.36 : x
  2. Step 2: Convert to fraction form
    807.88/1,210.12 = 588.36/x
  3. Step 3: Cross multiply
    807.88x = 1,210.12 × 588.36
  4. Step 4: Simplify right side
    807.88x = 711,986.20
  5. Step 5: Solve for x
    x = 711,986.20/807.88
  6. Step 6: Final answer
    x = 881.30

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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.