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Finding the Fourth Proportional to 356.88, 534.84 and 260.24

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Solution

The fourth proportional to 356.88, 534.84 and 260.24 is: 390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.88 : 534.84 = 260.24 : x
  2. Step 2: Convert to fraction form
    356.88/534.84 = 260.24/x
  3. Step 3: Cross multiply
    356.88x = 534.84 × 260.24
  4. Step 4: Simplify right side
    356.88x = 139,186.76
  5. Step 5: Solve for x
    x = 139,186.76/356.88
  6. Step 6: Final answer
    x = 390.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.