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Finding the Fourth Proportional to 965.26, 1,447.20 and 554.60

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Solution

The fourth proportional to 965.26, 1,447.20 and 554.60 is: 831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.26 : 1,447.20 = 554.60 : x
  2. Step 2: Convert to fraction form
    965.26/1,447.20 = 554.60/x
  3. Step 3: Cross multiply
    965.26x = 1,447.20 × 554.60
  4. Step 4: Simplify right side
    965.26x = 802,617.12
  5. Step 5: Solve for x
    x = 802,617.12/965.26
  6. Step 6: Final answer
    x = 831.50

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Double scale
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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.