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Finding the Fourth Proportional to 521.09, 718.84 and 510.16

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Solution

The fourth proportional to 521.09, 718.84 and 510.16 is: 703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.09 : 718.84 = 510.16 : x
  2. Step 2: Convert to fraction form
    521.09/718.84 = 510.16/x
  3. Step 3: Cross multiply
    521.09x = 718.84 × 510.16
  4. Step 4: Simplify right side
    521.09x = 366,723.41
  5. Step 5: Solve for x
    x = 366,723.41/521.09
  6. Step 6: Final answer
    x = 703.76

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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.