Home / 1,030.45-1,421.50-610.60

Finding the Fourth Proportional to 1,030.45, 1,421.50 and 610.60

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Solution

The fourth proportional to 1,030.45, 1,421.50 and 610.60 is: 842.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.45 : 1,421.50 = 610.60 : x
  2. Step 2: Convert to fraction form
    1,030.45/1,421.50 = 610.60/x
  3. Step 3: Cross multiply
    1,030.45x = 1,421.50 × 610.60
  4. Step 4: Simplify right side
    1,030.45x = 867,967.90
  5. Step 5: Solve for x
    x = 867,967.90/1,030.45
  6. Step 6: Final answer
    x = 842.32

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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.