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Finding the Fourth Proportional to 976.51, 1,347.13 and 603.19

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Solution

The fourth proportional to 976.51, 1,347.13 and 603.19 is: 832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.51 : 1,347.13 = 603.19 : x
  2. Step 2: Convert to fraction form
    976.51/1,347.13 = 603.19/x
  3. Step 3: Cross multiply
    976.51x = 1,347.13 × 603.19
  4. Step 4: Simplify right side
    976.51x = 812,575.34
  5. Step 5: Solve for x
    x = 812,575.34/976.51
  6. Step 6: Final answer
    x = 832.12

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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.