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Finding the Fourth Proportional to 924.98, 1,386.38 and 404.96

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Solution

The fourth proportional to 924.98, 1,386.38 and 404.96 is: 606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.98 : 1,386.38 = 404.96 : x
  2. Step 2: Convert to fraction form
    924.98/1,386.38 = 404.96/x
  3. Step 3: Cross multiply
    924.98x = 1,386.38 × 404.96
  4. Step 4: Simplify right side
    924.98x = 561,428.44
  5. Step 5: Solve for x
    x = 561,428.44/924.98
  6. Step 6: Final answer
    x = 606.96

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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.