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Finding the Fourth Proportional to 897.59, 1,346.04 and 312.44

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Solution

The fourth proportional to 897.59, 1,346.04 and 312.44 is: 468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.59 : 1,346.04 = 312.44 : x
  2. Step 2: Convert to fraction form
    897.59/1,346.04 = 312.44/x
  3. Step 3: Cross multiply
    897.59x = 1,346.04 × 312.44
  4. Step 4: Simplify right side
    897.59x = 420,560.10
  5. Step 5: Solve for x
    x = 420,560.10/897.59
  6. Step 6: Final answer
    x = 468.54

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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.