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Finding the Fourth Proportional to 904.63, 1,356.31 and 356.87

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Solution

The fourth proportional to 904.63, 1,356.31 and 356.87 is: 535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.63 : 1,356.31 = 356.87 : x
  2. Step 2: Convert to fraction form
    904.63/1,356.31 = 356.87/x
  3. Step 3: Cross multiply
    904.63x = 1,356.31 × 356.87
  4. Step 4: Simplify right side
    904.63x = 484,026.35
  5. Step 5: Solve for x
    x = 484,026.35/904.63
  6. Step 6: Final answer
    x = 535.05

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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.