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Finding the Fourth Proportional to 913.95, 1,260.77 and 692.53

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Solution

The fourth proportional to 913.95, 1,260.77 and 692.53 is: 955.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.95 : 1,260.77 = 692.53 : x
  2. Step 2: Convert to fraction form
    913.95/1,260.77 = 692.53/x
  3. Step 3: Cross multiply
    913.95x = 1,260.77 × 692.53
  4. Step 4: Simplify right side
    913.95x = 873,114.43
  5. Step 5: Solve for x
    x = 873,114.43/913.95
  6. Step 6: Final answer
    x = 955.32

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Double scale
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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.