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Finding the Fourth Proportional to 1,735.66, 2,602.06 and 810.76

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Solution

The fourth proportional to 1,735.66, 2,602.06 and 810.76 is: 1,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,735.66 : 2,602.06 = 810.76 : x
  2. Step 2: Convert to fraction form
    1,735.66/2,602.06 = 810.76/x
  3. Step 3: Cross multiply
    1,735.66x = 2,602.06 × 810.76
  4. Step 4: Simplify right side
    1,735.66x = 2,109,646.17
  5. Step 5: Solve for x
    x = 2,109,646.17/1,735.66
  6. Step 6: Final answer
    x = 1,215.47

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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.