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Finding the Fourth Proportional to 970.08, 1,453.29 and 751.08

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Solution

The fourth proportional to 970.08, 1,453.29 and 751.08 is: 1,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.08 : 1,453.29 = 751.08 : x
  2. Step 2: Convert to fraction form
    970.08/1,453.29 = 751.08/x
  3. Step 3: Cross multiply
    970.08x = 1,453.29 × 751.08
  4. Step 4: Simplify right side
    970.08x = 1,091,537.05
  5. Step 5: Solve for x
    x = 1,091,537.05/970.08
  6. Step 6: Final answer
    x = 1,125.20

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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.