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Finding the Fourth Proportional to 763.41, 1,053.36 and 483.69

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Solution

The fourth proportional to 763.41, 1,053.36 and 483.69 is: 667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.41 : 1,053.36 = 483.69 : x
  2. Step 2: Convert to fraction form
    763.41/1,053.36 = 483.69/x
  3. Step 3: Cross multiply
    763.41x = 1,053.36 × 483.69
  4. Step 4: Simplify right side
    763.41x = 509,499.70
  5. Step 5: Solve for x
    x = 509,499.70/763.41
  6. Step 6: Final answer
    x = 667.40

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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.