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Finding the Fourth Proportional to 622.17, 858.03 and 510.99

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Solution

The fourth proportional to 622.17, 858.03 and 510.99 is: 704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.17 : 858.03 = 510.99 : x
  2. Step 2: Convert to fraction form
    622.17/858.03 = 510.99/x
  3. Step 3: Cross multiply
    622.17x = 858.03 × 510.99
  4. Step 4: Simplify right side
    622.17x = 438,444.75
  5. Step 5: Solve for x
    x = 438,444.75/622.17
  6. Step 6: Final answer
    x = 704.70

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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.