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Finding the Fourth Proportional to 1,770.65, 2,656.07 and 538.10

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Solution

The fourth proportional to 1,770.65, 2,656.07 and 538.10 is: 807.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.65 : 2,656.07 = 538.10 : x
  2. Step 2: Convert to fraction form
    1,770.65/2,656.07 = 538.10/x
  3. Step 3: Cross multiply
    1,770.65x = 2,656.07 × 538.10
  4. Step 4: Simplify right side
    1,770.65x = 1,429,231.27
  5. Step 5: Solve for x
    x = 1,429,231.27/1,770.65
  6. Step 6: Final answer
    x = 807.18

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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.