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Finding the Fourth Proportional to 1,483.60, 2,225.45 and 509.69

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Solution

The fourth proportional to 1,483.60, 2,225.45 and 509.69 is: 764.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,483.60 : 2,225.45 = 509.69 : x
  2. Step 2: Convert to fraction form
    1,483.60/2,225.45 = 509.69/x
  3. Step 3: Cross multiply
    1,483.60x = 2,225.45 × 509.69
  4. Step 4: Simplify right side
    1,483.60x = 1,134,289.61
  5. Step 5: Solve for x
    x = 1,134,289.61/1,483.60
  6. Step 6: Final answer
    x = 764.55

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1.5x scale

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.