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Finding the Fourth Proportional to 842.16, 1,261.80 and 594.84

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Solution

The fourth proportional to 842.16, 1,261.80 and 594.84 is: 891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.16 : 1,261.80 = 594.84 : x
  2. Step 2: Convert to fraction form
    842.16/1,261.80 = 594.84/x
  3. Step 3: Cross multiply
    842.16x = 1,261.80 × 594.84
  4. Step 4: Simplify right side
    842.16x = 750,569.11
  5. Step 5: Solve for x
    x = 750,569.11/842.16
  6. Step 6: Final answer
    x = 891.24

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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.