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Finding the Fourth Proportional to 954.40, 1,433.22 and 522.40

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Solution

The fourth proportional to 954.40, 1,433.22 and 522.40 is: 784.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.40 : 1,433.22 = 522.40 : x
  2. Step 2: Convert to fraction form
    954.40/1,433.22 = 522.40/x
  3. Step 3: Cross multiply
    954.40x = 1,433.22 × 522.40
  4. Step 4: Simplify right side
    954.40x = 748,714.13
  5. Step 5: Solve for x
    x = 748,714.13/954.40
  6. Step 6: Final answer
    x = 784.49

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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.