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Finding the Fourth Proportional to 1,143.20, 1,714.08 and 526.12

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Solution

The fourth proportional to 1,143.20, 1,714.08 and 526.12 is: 788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.20 : 1,714.08 = 526.12 : x
  2. Step 2: Convert to fraction form
    1,143.20/1,714.08 = 526.12/x
  3. Step 3: Cross multiply
    1,143.20x = 1,714.08 × 526.12
  4. Step 4: Simplify right side
    1,143.20x = 901,811.77
  5. Step 5: Solve for x
    x = 901,811.77/1,143.20
  6. Step 6: Final answer
    x = 788.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.