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Finding the Fourth Proportional to 305.04, 459.93 and 257.52

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Solution

The fourth proportional to 305.04, 459.93 and 257.52 is: 388.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.04 : 459.93 = 257.52 : x
  2. Step 2: Convert to fraction form
    305.04/459.93 = 257.52/x
  3. Step 3: Cross multiply
    305.04x = 459.93 × 257.52
  4. Step 4: Simplify right side
    305.04x = 118,441.17
  5. Step 5: Solve for x
    x = 118,441.17/305.04
  6. Step 6: Final answer
    x = 388.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.