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Finding the Fourth Proportional to 1,759.55, 2,639.46 and 526.87

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Solution

The fourth proportional to 1,759.55, 2,639.46 and 526.87 is: 790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.55 : 2,639.46 = 526.87 : x
  2. Step 2: Convert to fraction form
    1,759.55/2,639.46 = 526.87/x
  3. Step 3: Cross multiply
    1,759.55x = 2,639.46 × 526.87
  4. Step 4: Simplify right side
    1,759.55x = 1,390,652.29
  5. Step 5: Solve for x
    x = 1,390,652.29/1,759.55
  6. Step 6: Final answer
    x = 790.35

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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.