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Finding the Fourth Proportional to 875.84, 1,311.36 and 601.44

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Solution

The fourth proportional to 875.84, 1,311.36 and 601.44 is: 900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.84 : 1,311.36 = 601.44 : x
  2. Step 2: Convert to fraction form
    875.84/1,311.36 = 601.44/x
  3. Step 3: Cross multiply
    875.84x = 1,311.36 × 601.44
  4. Step 4: Simplify right side
    875.84x = 788,704.36
  5. Step 5: Solve for x
    x = 788,704.36/875.84
  6. Step 6: Final answer
    x = 900.51

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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.