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Finding the Fourth Proportional to 962.84, 1,328.04 and 930.69

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Solution

The fourth proportional to 962.84, 1,328.04 and 930.69 is: 1,283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.84 : 1,328.04 = 930.69 : x
  2. Step 2: Convert to fraction form
    962.84/1,328.04 = 930.69/x
  3. Step 3: Cross multiply
    962.84x = 1,328.04 × 930.69
  4. Step 4: Simplify right side
    962.84x = 1,235,993.55
  5. Step 5: Solve for x
    x = 1,235,993.55/962.84
  6. Step 6: Final answer
    x = 1,283.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.