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Finding the Fourth Proportional to 621.02, 858.08 and 510.41

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Solution

The fourth proportional to 621.02, 858.08 and 510.41 is: 705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.02 : 858.08 = 510.41 : x
  2. Step 2: Convert to fraction form
    621.02/858.08 = 510.41/x
  3. Step 3: Cross multiply
    621.02x = 858.08 × 510.41
  4. Step 4: Simplify right side
    621.02x = 437,972.61
  5. Step 5: Solve for x
    x = 437,972.61/621.02
  6. Step 6: Final answer
    x = 705.25

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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.