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Finding the Fourth Proportional to 1,059.14, 1,588.71 and 289.64

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Solution

The fourth proportional to 1,059.14, 1,588.71 and 289.64 is: 434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.14 : 1,588.71 = 289.64 : x
  2. Step 2: Convert to fraction form
    1,059.14/1,588.71 = 289.64/x
  3. Step 3: Cross multiply
    1,059.14x = 1,588.71 × 289.64
  4. Step 4: Simplify right side
    1,059.14x = 460,159.02
  5. Step 5: Solve for x
    x = 460,159.02/1,059.14
  6. Step 6: Final answer
    x = 434.46

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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.