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Finding the Fourth Proportional to 585.06, 807.64 and 388.84

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Solution

The fourth proportional to 585.06, 807.64 and 388.84 is: 536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.06 : 807.64 = 388.84 : x
  2. Step 2: Convert to fraction form
    585.06/807.64 = 388.84/x
  3. Step 3: Cross multiply
    585.06x = 807.64 × 388.84
  4. Step 4: Simplify right side
    585.06x = 314,042.74
  5. Step 5: Solve for x
    x = 314,042.74/585.06
  6. Step 6: Final answer
    x = 536.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.