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Finding the Fourth Proportional to 501.61, 690.58 and 436.08

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Solution

The fourth proportional to 501.61, 690.58 and 436.08 is: 600.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.61 : 690.58 = 436.08 : x
  2. Step 2: Convert to fraction form
    501.61/690.58 = 436.08/x
  3. Step 3: Cross multiply
    501.61x = 690.58 × 436.08
  4. Step 4: Simplify right side
    501.61x = 301,148.81
  5. Step 5: Solve for x
    x = 301,148.81/501.61
  6. Step 6: Final answer
    x = 600.37

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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.