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Finding the Fourth Proportional to 994.88, 1,492.96 and 526.78

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Solution

The fourth proportional to 994.88, 1,492.96 and 526.78 is: 790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.88 : 1,492.96 = 526.78 : x
  2. Step 2: Convert to fraction form
    994.88/1,492.96 = 526.78/x
  3. Step 3: Cross multiply
    994.88x = 1,492.96 × 526.78
  4. Step 4: Simplify right side
    994.88x = 786,463.99
  5. Step 5: Solve for x
    x = 786,463.99/994.88
  6. Step 6: Final answer
    x = 790.51

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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.