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Finding the Fourth Proportional to 763.19, 1,053.18 and 483.58

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Solution

The fourth proportional to 763.19, 1,053.18 and 483.58 is: 667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.19 : 1,053.18 = 483.58 : x
  2. Step 2: Convert to fraction form
    763.19/1,053.18 = 483.58/x
  3. Step 3: Cross multiply
    763.19x = 1,053.18 × 483.58
  4. Step 4: Simplify right side
    763.19x = 509,298.10
  5. Step 5: Solve for x
    x = 509,298.10/763.19
  6. Step 6: Final answer
    x = 667.33

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Half scale
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Double scale
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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.