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Finding the Fourth Proportional to 535.06, 802.59 and 210.45

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Solution

The fourth proportional to 535.06, 802.59 and 210.45 is: 315.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.06 : 802.59 = 210.45 : x
  2. Step 2: Convert to fraction form
    535.06/802.59 = 210.45/x
  3. Step 3: Cross multiply
    535.06x = 802.59 × 210.45
  4. Step 4: Simplify right side
    535.06x = 168,905.07
  5. Step 5: Solve for x
    x = 168,905.07/535.06
  6. Step 6: Final answer
    x = 315.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.