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Finding the Fourth Proportional to 924.12, 1,386.77 and 533.88

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Solution

The fourth proportional to 924.12, 1,386.77 and 533.88 is: 801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.12 : 1,386.77 = 533.88 : x
  2. Step 2: Convert to fraction form
    924.12/1,386.77 = 533.88/x
  3. Step 3: Cross multiply
    924.12x = 1,386.77 × 533.88
  4. Step 4: Simplify right side
    924.12x = 740,367.15
  5. Step 5: Solve for x
    x = 740,367.15/924.12
  6. Step 6: Final answer
    x = 801.16

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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.