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Finding the Fourth Proportional to 536.21, 741.99 and 457.40

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Solution

The fourth proportional to 536.21, 741.99 and 457.40 is: 632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.21 : 741.99 = 457.40 : x
  2. Step 2: Convert to fraction form
    536.21/741.99 = 457.40/x
  3. Step 3: Cross multiply
    536.21x = 741.99 × 457.40
  4. Step 4: Simplify right side
    536.21x = 339,388.08
  5. Step 5: Solve for x
    x = 339,388.08/536.21
  6. Step 6: Final answer
    x = 632.94

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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.