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Finding the Fourth Proportional to 1,483.31, 2,225.11 and 509.28

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Solution

The fourth proportional to 1,483.31, 2,225.11 and 509.28 is: 763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,483.31 : 2,225.11 = 509.28 : x
  2. Step 2: Convert to fraction form
    1,483.31/2,225.11 = 509.28/x
  3. Step 3: Cross multiply
    1,483.31x = 2,225.11 × 509.28
  4. Step 4: Simplify right side
    1,483.31x = 1,133,210.86
  5. Step 5: Solve for x
    x = 1,133,210.86/1,483.31
  6. Step 6: Final answer
    x = 763.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.