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Finding the Fourth Proportional to 935.04, 1,290.42 and 585.66

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Solution

The fourth proportional to 935.04, 1,290.42 and 585.66 is: 808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.04 : 1,290.42 = 585.66 : x
  2. Step 2: Convert to fraction form
    935.04/1,290.42 = 585.66/x
  3. Step 3: Cross multiply
    935.04x = 1,290.42 × 585.66
  4. Step 4: Simplify right side
    935.04x = 755,747.38
  5. Step 5: Solve for x
    x = 755,747.38/935.04
  6. Step 6: Final answer
    x = 808.25

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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.