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Finding the Fourth Proportional to 590.63, 815.16 and 357.89

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Solution

The fourth proportional to 590.63, 815.16 and 357.89 is: 493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.63 : 815.16 = 357.89 : x
  2. Step 2: Convert to fraction form
    590.63/815.16 = 357.89/x
  3. Step 3: Cross multiply
    590.63x = 815.16 × 357.89
  4. Step 4: Simplify right side
    590.63x = 291,733.54
  5. Step 5: Solve for x
    x = 291,733.54/590.63
  6. Step 6: Final answer
    x = 493.94

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Double scale
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Similar ratio
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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.