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Finding the Fourth Proportional to 962.51, 1,443.77 and 771.35

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Solution

The fourth proportional to 962.51, 1,443.77 and 771.35 is: 1,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.51 : 1,443.77 = 771.35 : x
  2. Step 2: Convert to fraction form
    962.51/1,443.77 = 771.35/x
  3. Step 3: Cross multiply
    962.51x = 1,443.77 × 771.35
  4. Step 4: Simplify right side
    962.51x = 1,113,648.13
  5. Step 5: Solve for x
    x = 1,113,648.13/962.51
  6. Step 6: Final answer
    x = 1,157.03

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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.