Home / 1,030.36-1,421.95-588.31

Finding the Fourth Proportional to 1,030.36, 1,421.95 and 588.31

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Solution

The fourth proportional to 1,030.36, 1,421.95 and 588.31 is: 811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.36 : 1,421.95 = 588.31 : x
  2. Step 2: Convert to fraction form
    1,030.36/1,421.95 = 588.31/x
  3. Step 3: Cross multiply
    1,030.36x = 1,421.95 × 588.31
  4. Step 4: Simplify right side
    1,030.36x = 836,547.40
  5. Step 5: Solve for x
    x = 836,547.40/1,030.36
  6. Step 6: Final answer
    x = 811.90

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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.