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Finding the Fourth Proportional to 935.30, 1,289.57 and 585.38

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Solution

The fourth proportional to 935.30, 1,289.57 and 585.38 is: 807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.30 : 1,289.57 = 585.38 : x
  2. Step 2: Convert to fraction form
    935.30/1,289.57 = 585.38/x
  3. Step 3: Cross multiply
    935.30x = 1,289.57 × 585.38
  4. Step 4: Simplify right side
    935.30x = 754,879.11
  5. Step 5: Solve for x
    x = 754,879.11/935.30
  6. Step 6: Final answer
    x = 807.10

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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.