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Finding the Fourth Proportional to 1,030.60, 1,422.32 and 588.68

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Solution

The fourth proportional to 1,030.60, 1,422.32 and 588.68 is: 812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.60 : 1,422.32 = 588.68 : x
  2. Step 2: Convert to fraction form
    1,030.60/1,422.32 = 588.68/x
  3. Step 3: Cross multiply
    1,030.60x = 1,422.32 × 588.68
  4. Step 4: Simplify right side
    1,030.60x = 837,291.34
  5. Step 5: Solve for x
    x = 837,291.34/1,030.60
  6. Step 6: Final answer
    x = 812.43

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1.5x scale

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.