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Finding the Fourth Proportional to 1,030.23, 1,421.63 and 588.06

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Solution

The fourth proportional to 1,030.23, 1,421.63 and 588.06 is: 811.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.23 : 1,421.63 = 588.06 : x
  2. Step 2: Convert to fraction form
    1,030.23/1,421.63 = 588.06/x
  3. Step 3: Cross multiply
    1,030.23x = 1,421.63 × 588.06
  4. Step 4: Simplify right side
    1,030.23x = 836,000.80
  5. Step 5: Solve for x
    x = 836,000.80/1,030.23
  6. Step 6: Final answer
    x = 811.47

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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.