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Finding the Fourth Proportional to 895.60, 1,342.59 and 318.34

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Solution

The fourth proportional to 895.60, 1,342.59 and 318.34 is: 477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.60 : 1,342.59 = 318.34 : x
  2. Step 2: Convert to fraction form
    895.60/1,342.59 = 318.34/x
  3. Step 3: Cross multiply
    895.60x = 1,342.59 × 318.34
  4. Step 4: Simplify right side
    895.60x = 427,400.10
  5. Step 5: Solve for x
    x = 427,400.10/895.60
  6. Step 6: Final answer
    x = 477.22

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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.