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Finding the Fourth Proportional to 883.06, 1,323.64 and 420.62

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Solution

The fourth proportional to 883.06, 1,323.64 and 420.62 is: 630.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.06 : 1,323.64 = 420.62 : x
  2. Step 2: Convert to fraction form
    883.06/1,323.64 = 420.62/x
  3. Step 3: Cross multiply
    883.06x = 1,323.64 × 420.62
  4. Step 4: Simplify right side
    883.06x = 556,749.46
  5. Step 5: Solve for x
    x = 556,749.46/883.06
  6. Step 6: Final answer
    x = 630.48

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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.