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Finding the Fourth Proportional to 948.96, 1,309.14 and 752.76

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Solution

The fourth proportional to 948.96, 1,309.14 and 752.76 is: 1,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.96 : 1,309.14 = 752.76 : x
  2. Step 2: Convert to fraction form
    948.96/1,309.14 = 752.76/x
  3. Step 3: Cross multiply
    948.96x = 1,309.14 × 752.76
  4. Step 4: Simplify right side
    948.96x = 985,468.23
  5. Step 5: Solve for x
    x = 985,468.23/948.96
  6. Step 6: Final answer
    x = 1,038.47

Related Problems

Find fourth proportional to 474.48, 654.57 and 376.38
Half scale
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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.