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Finding the Fourth Proportional to 975.35, 1,463.03 and 390.62

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Solution

The fourth proportional to 975.35, 1,463.03 and 390.62 is: 585.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.35 : 1,463.03 = 390.62 : x
  2. Step 2: Convert to fraction form
    975.35/1,463.03 = 390.62/x
  3. Step 3: Cross multiply
    975.35x = 1,463.03 × 390.62
  4. Step 4: Simplify right side
    975.35x = 571,482.44
  5. Step 5: Solve for x
    x = 571,482.44/975.35
  6. Step 6: Final answer
    x = 585.92

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.