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Finding the Fourth Proportional to 603.53, 831.16 and 554.32

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Solution

The fourth proportional to 603.53, 831.16 and 554.32 is: 763.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.53 : 831.16 = 554.32 : x
  2. Step 2: Convert to fraction form
    603.53/831.16 = 554.32/x
  3. Step 3: Cross multiply
    603.53x = 831.16 × 554.32
  4. Step 4: Simplify right side
    603.53x = 460,725.84
  5. Step 5: Solve for x
    x = 460,725.84/603.53
  6. Step 6: Final answer
    x = 763.39

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1.5x scale

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.