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Finding the Fourth Proportional to 894.40, 1,341.76 and 433.02

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Solution

The fourth proportional to 894.40, 1,341.76 and 433.02 is: 649.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.40 : 1,341.76 = 433.02 : x
  2. Step 2: Convert to fraction form
    894.40/1,341.76 = 433.02/x
  3. Step 3: Cross multiply
    894.40x = 1,341.76 × 433.02
  4. Step 4: Simplify right side
    894.40x = 581,008.92
  5. Step 5: Solve for x
    x = 581,008.92/894.40
  6. Step 6: Final answer
    x = 649.61

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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.