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Finding the Fourth Proportional to 1,030.52, 1,421.93 and 588.26

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Solution

The fourth proportional to 1,030.52, 1,421.93 and 588.26 is: 811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.52 : 1,421.93 = 588.26 : x
  2. Step 2: Convert to fraction form
    1,030.52/1,421.93 = 588.26/x
  3. Step 3: Cross multiply
    1,030.52x = 1,421.93 × 588.26
  4. Step 4: Simplify right side
    1,030.52x = 836,458.90
  5. Step 5: Solve for x
    x = 836,458.90/1,030.52
  6. Step 6: Final answer
    x = 811.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.