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Finding the Fourth Proportional to 1,759.54, 2,639.76 and 526.96

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Solution

The fourth proportional to 1,759.54, 2,639.76 and 526.96 is: 790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.54 : 2,639.76 = 526.96 : x
  2. Step 2: Convert to fraction form
    1,759.54/2,639.76 = 526.96/x
  3. Step 3: Cross multiply
    1,759.54x = 2,639.76 × 526.96
  4. Step 4: Simplify right side
    1,759.54x = 1,391,047.93
  5. Step 5: Solve for x
    x = 1,391,047.93/1,759.54
  6. Step 6: Final answer
    x = 790.57

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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.