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Finding the Fourth Proportional to 785.62, 1,177.62 and 630.10

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Solution

The fourth proportional to 785.62, 1,177.62 and 630.10 is: 944.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    785.62 : 1,177.62 = 630.10 : x
  2. Step 2: Convert to fraction form
    785.62/1,177.62 = 630.10/x
  3. Step 3: Cross multiply
    785.62x = 1,177.62 × 630.10
  4. Step 4: Simplify right side
    785.62x = 742,018.36
  5. Step 5: Solve for x
    x = 742,018.36/785.62
  6. Step 6: Final answer
    x = 944.50

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1.5x scale

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.