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Finding the Fourth Proportional to 1,143.48, 1,714.95 and 526.80

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Solution

The fourth proportional to 1,143.48, 1,714.95 and 526.80 is: 790.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.48 : 1,714.95 = 526.80 : x
  2. Step 2: Convert to fraction form
    1,143.48/1,714.95 = 526.80/x
  3. Step 3: Cross multiply
    1,143.48x = 1,714.95 × 526.80
  4. Step 4: Simplify right side
    1,143.48x = 903,435.66
  5. Step 5: Solve for x
    x = 903,435.66/1,143.48
  6. Step 6: Final answer
    x = 790.08

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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.