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Finding the Fourth Proportional to 889.74, 1,333.68 and 341.76

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Solution

The fourth proportional to 889.74, 1,333.68 and 341.76 is: 512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.74 : 1,333.68 = 341.76 : x
  2. Step 2: Convert to fraction form
    889.74/1,333.68 = 341.76/x
  3. Step 3: Cross multiply
    889.74x = 1,333.68 × 341.76
  4. Step 4: Simplify right side
    889.74x = 455,798.48
  5. Step 5: Solve for x
    x = 455,798.48/889.74
  6. Step 6: Final answer
    x = 512.28

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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.