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Finding the Fourth Proportional to 1,680.94, 2,521.42 and 526.69

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Solution

The fourth proportional to 1,680.94, 2,521.42 and 526.69 is: 790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.94 : 2,521.42 = 526.69 : x
  2. Step 2: Convert to fraction form
    1,680.94/2,521.42 = 526.69/x
  3. Step 3: Cross multiply
    1,680.94x = 2,521.42 × 526.69
  4. Step 4: Simplify right side
    1,680.94x = 1,327,999.08
  5. Step 5: Solve for x
    x = 1,327,999.08/1,680.94
  6. Step 6: Final answer
    x = 790.03

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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.