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Finding the Fourth Proportional to 975.62, 1,452.48 and 970.76

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Solution

The fourth proportional to 975.62, 1,452.48 and 970.76 is: 1,445.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.62 : 1,452.48 = 970.76 : x
  2. Step 2: Convert to fraction form
    975.62/1,452.48 = 970.76/x
  3. Step 3: Cross multiply
    975.62x = 1,452.48 × 970.76
  4. Step 4: Simplify right side
    975.62x = 1,410,009.48
  5. Step 5: Solve for x
    x = 1,410,009.48/975.62
  6. Step 6: Final answer
    x = 1,445.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.