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Finding the Fourth Proportional to 994.77, 1,492.16 and 410.09

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Solution

The fourth proportional to 994.77, 1,492.16 and 410.09 is: 615.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.77 : 1,492.16 = 410.09 : x
  2. Step 2: Convert to fraction form
    994.77/1,492.16 = 410.09/x
  3. Step 3: Cross multiply
    994.77x = 1,492.16 × 410.09
  4. Step 4: Simplify right side
    994.77x = 611,919.89
  5. Step 5: Solve for x
    x = 611,919.89/994.77
  6. Step 6: Final answer
    x = 615.14

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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.