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Finding the Fourth Proportional to 452.48, 623.14 and 407.84

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Solution

The fourth proportional to 452.48, 623.14 and 407.84 is: 561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.48 : 623.14 = 407.84 : x
  2. Step 2: Convert to fraction form
    452.48/623.14 = 407.84/x
  3. Step 3: Cross multiply
    452.48x = 623.14 × 407.84
  4. Step 4: Simplify right side
    452.48x = 254,141.42
  5. Step 5: Solve for x
    x = 254,141.42/452.48
  6. Step 6: Final answer
    x = 561.66

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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.