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Finding the Fourth Proportional to 562.51, 776.24 and 313.81

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Solution

The fourth proportional to 562.51, 776.24 and 313.81 is: 433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.51 : 776.24 = 313.81 : x
  2. Step 2: Convert to fraction form
    562.51/776.24 = 313.81/x
  3. Step 3: Cross multiply
    562.51x = 776.24 × 313.81
  4. Step 4: Simplify right side
    562.51x = 243,593.91
  5. Step 5: Solve for x
    x = 243,593.91/562.51
  6. Step 6: Final answer
    x = 433.05

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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.