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Finding the Fourth Proportional to 1,059.17, 1,588.55 and 409.82

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Solution

The fourth proportional to 1,059.17, 1,588.55 and 409.82 is: 614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.17 : 1,588.55 = 409.82 : x
  2. Step 2: Convert to fraction form
    1,059.17/1,588.55 = 409.82/x
  3. Step 3: Cross multiply
    1,059.17x = 1,588.55 × 409.82
  4. Step 4: Simplify right side
    1,059.17x = 651,009.57
  5. Step 5: Solve for x
    x = 651,009.57/1,059.17
  6. Step 6: Final answer
    x = 614.64

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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.