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Finding the Fourth Proportional to 760.68, 1,146.20 and 626.72

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Solution

The fourth proportional to 760.68, 1,146.20 and 626.72 is: 944.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.68 : 1,146.20 = 626.72 : x
  2. Step 2: Convert to fraction form
    760.68/1,146.20 = 626.72/x
  3. Step 3: Cross multiply
    760.68x = 1,146.20 × 626.72
  4. Step 4: Simplify right side
    760.68x = 718,337.60
  5. Step 5: Solve for x
    x = 718,337.60/760.68
  6. Step 6: Final answer
    x = 944.34

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.